Matilda, apart from confirming ovulation (even if it's after the event), watching your temperatures can give you a bit of a clue about when AF is due to arrive or if it's worth testing. If your luteal phase is usually 12 days and your temperature is still high (well above the coverline) at 12 DPO, then it would be worth testing with an early HPT. If your temperature plummets towards the coverline or below it, you can expect AF fairly soon afterwards. As the others have wisely said, temping helps you learn what your cycle pattern is like. Woman to woman it can vary greatly. Wishing you lots of luck and baby dust for your TTC journey.

Renstar, a jump of more than .1 of a degree halfway through your cycle is usually a good clue of ovulation, FF will give you the coverline high five after you've recorded a few consecutive high temperatures after that spike. Good luck!!

Feel free to click on my ticker to see a few of my charts.